package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.exception.BusinessException;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;

import org.springframework.web.bind.annotation.*;


import javax.servlet.http.HttpServletRequest;
import java.sql.SQLIntegrityConstraintViolationException;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
        //1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3、如果没有查询到则返回登录失败结果
        if(emp==null){
            return R.error("登录失败");
        }
        //4、密码比对，如果不一致则返回登录失败结果
        if(!emp.getPassword().equals(password)){
            return R.error("登录失败");
        }
        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if(emp.getStatus()==0){
            return R.error("账号已禁用");
        }
        //6、登录成功，将员工id存入Session并返回登录成功结果
         request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);

    }


    /**
     * 员工退出
     *
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 员工添加
     */
    @PostMapping
    public R<String> save( HttpServletRequest request,@RequestBody Employee employee) throws SQLIntegrityConstraintViolationException {
        log.info("新增员工,员工信息:{}", employee.toString());
        LambdaQueryWrapper<Employee> wrapper = new LambdaQueryWrapper<>();
         wrapper.eq(Employee::getUsername,employee.getUsername());
        Employee one = employeeService.getOne(wrapper);
        if(one!=null){
            throw new BusinessException("账号"+employee.getUsername()+"已重复");
        }

        //设置初始化密码,需要进行MD5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

//        //设置添加时间,修改时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//
//        //获得当前登录用户的id
//        Long empId = (Long) request.getSession().getAttribute("employee");
//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);

        //添加
        employeeService.save(employee);


        return R.success("新增员工成功");

    }

    /**
     * 分页查询
     */
     @GetMapping("/page")
    public R<Page> pages(int page, int pageSize, String name){
         log.info("page={},pageSize={},name={}",page,pageSize,name);

         //构造分页构造器
         Page page1 = new Page(page,pageSize);

         //条件构造器
         LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
         //添加过滤条件,name也有可能是空,所以要做非空判断
         queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
         //添加排序条件
         queryWrapper.orderByDesc(Employee::getUpdateTime);

         //执行查询
          employeeService.page(page1,queryWrapper);

         return R.success(page1);
    }

    /**
     * 启用,禁用员工账号
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
         log.info(employee.toString());
         //从session中获取 当前登录人的id
//         Long id = (Long) request.getSession().getAttribute("employee");
//
//         //把修改时间和修改人装上去
//         employee.setUpdateTime(LocalDateTime.now());
//         employee.setUpdateUser(id);

         //修改
           employeeService.updateById(employee);

           return R.success("修改成功");
    }

    /**
     * 根据id查询员工信息
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
           log.info(String.valueOf(id));
        Employee byId = employeeService.getById(id);
        if(byId!=null){
           return R.success(byId);
        }
           return R.error("没有查询到对应信息");
    }



}
